diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 409d90ebcf..d4ff741fb6 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -269,45 +269,6 @@ jobs:
       env:
         RUST_BACKTRACE: 1
 
-  # Perform all tests (debug mode) for `wasmtime` with the experimental x64
-  # backend. This runs on the nightly channel of Rust (because of issues with
-  # unifying Cargo features on stable) on Ubuntu.
-  test_x64:
-    name: Test x64 new backend
-    runs-on: ubuntu-latest
-    steps:
-    - uses: actions/checkout@v2
-      with:
-        submodules: true
-    - uses: ./.github/actions/install-rust
-      with:
-        toolchain: nightly-2020-07-27
-    - uses: ./.github/actions/define-llvm-env
-
-    # Install wasm32 targets in order to build various tests throughout the
-    # repo
-    - run: rustup target add wasm32-wasi
-    - run: rustup target add wasm32-unknown-unknown
-
-    # Build and test all features except for lightbeam
-    - run: |
-        cargo \
-            -Zfeatures=all -Zpackage-features \
-            test \
-            --features test-programs/test_programs \
-            --features experimental_x64 \
-            --all \
-            --exclude lightbeam \
-            --exclude peepmatic \
-            --exclude peepmatic-automata \
-            --exclude peepmatic-fuzzing \
-            --exclude peepmatic-macro \
-            --exclude peepmatic-runtime \
-            --exclude peepmatic-test
-      env:
-        RUST_BACKTRACE: 1
-
-
   # Verify that cranelift's code generation is deterministic
   meta_determinist_check:
     name: Meta deterministic check